EP0010812B1 - Contraceptive device - Google Patents
Contraceptive device Download PDFInfo
- Publication number
- EP0010812B1 EP0010812B1 EP79200623A EP79200623A EP0010812B1 EP 0010812 B1 EP0010812 B1 EP 0010812B1 EP 79200623 A EP79200623 A EP 79200623A EP 79200623 A EP79200623 A EP 79200623A EP 0010812 B1 EP0010812 B1 EP 0010812B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- enlargements
- contraceptive device
- connection element
- contraceptive
- oblong
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F6/00—Contraceptive devices; Pessaries; Applicators therefor
- A61F6/20—Vas deferens occluders; Fallopian occluders
- A61F6/22—Vas deferens occluders; Fallopian occluders implantable in tubes
- A61F6/225—Vas deferens occluders; Fallopian occluders implantable in tubes transcervical
Definitions
- the invention relates to a contraceptive device for use in the oviducts consisting of an oblong connection element connecting two enlargements having rounded shapes.
- a contraceptive device of this kind is disclosed in German published Patent Application 23 28 175.
- This prior art contraceptive device is dimensioned such that the enlargement 4 has a substantially larger maximum cross-section area than the enlargement 2, in a plane transverse to the longitudinal axis of the connection element 3. Due to this shape of the mentioned prior art contraceptive device the forces exerted by the muscles and the tissue of the oviduct in which the device is placed tend to shift the device in the direction of the enlargement having the largest cross-section area. A stable, balanced positioning cannot be attained.
- a major object of the invention is to provide an improved contraceptive device which can be reliably and stably positioned and fixed in the oviducts.
- the invention provides a contraceptive device of the kind set forth which is characterized in that the maximum cross-section areas of said enlargements in a plane transverse to the longitudinal axis of said connection element are substantially equal.
- a core consists of an oblong connection element connecting two enlargements, said enlargements having maximum cross-section areas in a plane transverse to the longitudinal axis of said connection element which are substantially equal. Due to the fact that the oblong connection element is fully surrounded by strips which are highly expandable by water absorption the forces exerted on the element in situ prevent a stable positioning of the device, contrary to the invention.
- the device according to the invention may be characterized in that the largest diameters of said enlargements are within the range of 2-6 mm, the length of said oblong connection element being within the range of 2-14 mm and the diameter of said connection element being in the range of 0.4-0.8 times the largest diameters of said enlargements.
- the enlargements may at least partly be of rubber elastic synthetic resin.
- the dilatations of the oviducts can be compensated if at least part of the device according to the invention is provided with at least a circular layer of a material which can highly expand by water absorption.
- a material which can highly expand by water absorption.
- a hydrogel particularly polyhydroxyethyl- methacrylate, known under the trade name Polyhema.
- At least said enlargements may have a core of a material containing copper.
- the axial fixation of the device will in an important degree be the result of the forces exerted by the muscle tissue of the uterus on the facing surfaces of the enlargements.
- the closure predominantly takes place at the largest diameter of the enlargements, but also in a not- neglectable degree by the pressure exerted by the muscle tissue of the uterus on the oblong connection element.
- the tissue surrounding the device tends to adapt itself to the shape of the device, i.e. provided the device is stably positioned in the oviduct the local pressure tends to be more or less equal along the length of the device: the device "grows into the tissue" and the fixation becomes gradually less dependent upon the cross-section areas of the enlargements.
- the device When after some substantial time the device is removed, its shape can be recognized while inspecting by means of an endoscope the oviduct wall.
- connection element with at least one circular rib having a smoothly rounded shape and having a smaller diameter than said enlargements.
- the device is hollow and open at one end only.
- measuring instruments can be accommodated in the cavity within the device and tools may be applied to grip in it, e.g. to bring the device in its place or to remove it therefrom, or.to handle it while applying a layer of highly expandable material.
- the contraceptive device as shown in fig. 1 comprises two spherical enlargements 1, 2 and a cylindrical oblong connection element 3.
- the device is entirely hollow.
- the wall thickness w 1 of the connection element and the wall thickness w 2 of the enlargements are dependent on the required elasticity of such parts.
- the ratio between the diameter d of the connection element 3 and the maximum diameter D of the enlargements 1, 2 is about 0,5, but this ratio can be varied in dependence on the circumstances from 0,4 to 0,8. A smaller ratio will prevent a seal on the connection element and a larger ratio will increase the risk of axial rejection from the mouth of the oviducts if an unequal muscle contraction occurs.
- the values of these diameters D and d and of the lengths I of the connection element will be dependent on the anatomic shape of the mouths 28 of the oviducts in the uterus and on the diameters of the oviducts just outside the uterus wall.
- the position of the contraceptive devices in the oviduct mouths 28 is shown: one of the enlargements still in the funnel shaped widened part 4 of the oviduct 5 in the uterus cavity and the other enlargement just outside the muscle tissue 7 of the uterus 8 in the oviduct.
- the several dimensions of the contraceptive device, particularly the length I of the connection element 3 have to be selected dependent on the anatomic data, in order that a suitable closure on all parts of the contraceptive device is obtained.
- the closure in the mouths 28 may be improved by providing the connection element with at least one circular rib as depicted in figs. 3 and 4.
- the oblong element 9 is elliptic in longitudinal section
- the oblong element 10 has three peripheral ribs 11 with rounded shapes for preventing tissue irritation.
- the embodiment of fig. 4 is also different from that of fig. 1 in that a layered construction is used: the outer layer 14 may be a tissue friendly material, which property is not required for the material of the inner layer 15, which material may be chosen for its mechanical properties such as a certain elasticity.
- the contraceptive device preferably is of at least an outer material which can highly increase in volume by water absorption, such as a hydrogel, offering the advantage that on dilatation of the cavity accommodating the device the diameter of the device will increase as a result of water absorption, so that the closure is safeguarded.
- an outer material which can highly increase in volume by water absorption, such as a hydrogel, offering the advantage that on dilatation of the cavity accommodating the device the diameter of the device will increase as a result of water absorption, so that the closure is safeguarded.
- After pressure increase the material can lose water and decrease diameter so that after a certain time the pressure exerted by the device on the surrounding tissues has an acceptable value again.
- Adapting the pressure is possible by a suitable selection of the materials of both layers and a selection of the wall thickness w 3 and w 4 of the inner layer 15 of the connection element and the enlargements respectively and the wall thickness w 5 and w 6 of the outer layer 14 of these parts.
- an axial section through a modified embodiment comprising an asymmetric core 20 made of copper and being rotary symmetric around its longitudinal axis.
- the core comprises a connection element and two enlargements at its two ends.
- the one enlargement 21 is slightly pointed at its free end for easier application, the other enlargement 22 being flattened at its free end and having an axial bore 23 for applying tools to grip in.
- the core is coated all round with a layer of Polyhema (trade name) 24.
- Polyhema trade name 24.
- this embodiment satisfies the requirement that the maximum cross section areas of both enlargements in a plane 25 transverse to the longitudinal direction have to be equal.
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- Health & Medical Sciences (AREA)
- Reproductive Health (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Orthopedics, Nursing, And Contraception (AREA)
- Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
Abstract
Description
- The invention relates to a contraceptive device for use in the oviducts consisting of an oblong connection element connecting two enlargements having rounded shapes. A contraceptive device of this kind is disclosed in German published
Patent Application 23 28 175. This prior art contraceptive device is dimensioned such that the enlargement 4 has a substantially larger maximum cross-section area than the enlargement 2, in a plane transverse to the longitudinal axis of the connection element 3. Due to this shape of the mentioned prior art contraceptive device the forces exerted by the muscles and the tissue of the oviduct in which the device is placed tend to shift the device in the direction of the enlargement having the largest cross-section area. A stable, balanced positioning cannot be attained. - A major object of the invention, therefore, is to provide an improved contraceptive device which can be reliably and stably positioned and fixed in the oviducts. In view thereof the invention provides a contraceptive device of the kind set forth which is characterized in that the maximum cross-section areas of said enlargements in a plane transverse to the longitudinal axis of said connection element are substantially equal.
- It is noted that from Dutch Patent Application 6709780 an intrauterine contraceptive device is known in which a core consists of an oblong connection element connecting two enlargements, said enlargements having maximum cross-section areas in a plane transverse to the longitudinal axis of said connection element which are substantially equal. Due to the fact that the oblong connection element is fully surrounded by strips which are highly expandable by water absorption the forces exerted on the element in situ prevent a stable positioning of the device, contrary to the invention.
- For obtaining a good closure of the oviducts while preventing an appreciable irritation the device according to the invention may be characterized in that the largest diameters of said enlargements are within the range of 2-6 mm, the length of said oblong connection element being within the range of 2-14 mm and the diameter of said connection element being in the range of 0.4-0.8 times the largest diameters of said enlargements.
- In order to follow temporary dilatations of the oviducts the enlargements may at least partly be of rubber elastic synthetic resin.
- If the dilatations of the oviducts are prolonged the dilatations can be compensated if at least part of the device according to the invention is provided with at least a circular layer of a material which can highly expand by water absorption. An example of such material is a hydrogel, particularly polyhydroxyethyl- methacrylate, known under the trade name Polyhema.
- In order to add a sperm-killing feature to the contraceptive device at least said enlargements may have a core of a material containing copper.
- The axial fixation of the device will in an important degree be the result of the forces exerted by the muscle tissue of the uterus on the facing surfaces of the enlargements. The closure predominantly takes place at the largest diameter of the enlargements, but also in a not- neglectable degree by the pressure exerted by the muscle tissue of the uterus on the oblong connection element.
- It is hereby remarked that the tissue surrounding the device tends to adapt itself to the shape of the device, i.e. provided the device is stably positioned in the oviduct the local pressure tends to be more or less equal along the length of the device: the device "grows into the tissue" and the fixation becomes gradually less dependent upon the cross-section areas of the enlargements. When after some substantial time the device is removed, its shape can be recognized while inspecting by means of an endoscope the oviduct wall. From the above it will be clear that a firm and stable positioning of the device immediately after its introduction into the oviduct is a requirement; this requirement cannot be fulfilled by the device according to
DE 23 28 175 as the forces exerted by the tissue on the enlargements can never reach a stable balance. - The closure can be improved by providing the connection element with at least one circular rib having a smoothly rounded shape and having a smaller diameter than said enlargements.
- In a specific embodiment the device is hollow and open at one end only. In this embodiment measuring instruments can be accommodated in the cavity within the device and tools may be applied to grip in it, e.g. to bring the device in its place or to remove it therefrom, or.to handle it while applying a layer of highly expandable material.
- Further features and characteristics of the invention will be explained in connection with the drawing in which some preferred embodiments of the contraceptive device and its use are depicted.
- Fig. 1 shows a partly axial sectioned contraceptive device.
- Fig. 2 shows a transverse section along the line II-II in fig. 1.
- Fig. 3 and 4 show axial sections of modified embodiments of the device shown in fig. 1.
- Fig. 5 shows the use of the contraceptive device according to the invention.
- Fig. 6 shows an axial section of a modified embodiment of the device shown in fig. 1.
- The contraceptive device as shown in fig. 1 comprises two spherical enlargements 1, 2 and a cylindrical oblong connection element 3. The device is entirely hollow. The wall thickness w 1 of the connection element and the wall thickness w 2 of the enlargements are dependent on the required elasticity of such parts.
- In the depicted embodiment the ratio between the diameter d of the connection element 3 and the maximum diameter D of the enlargements 1, 2 is about 0,5, but this ratio can be varied in dependence on the circumstances from 0,4 to 0,8. A smaller ratio will prevent a seal on the connection element and a larger ratio will increase the risk of axial rejection from the mouth of the oviducts if an unequal muscle contraction occurs. The values of these diameters D and d and of the lengths I of the connection element will be dependent on the anatomic shape of the
mouths 28 of the oviducts in the uterus and on the diameters of the oviducts just outside the uterus wall. - In fig. 5 the position of the contraceptive devices in the
oviduct mouths 28 is shown: one of the enlargements still in the funnel shaped widened part 4 of the oviduct 5 in the uterus cavity and the other enlargement just outside the muscle tissue 7 of the uterus 8 in the oviduct. The several dimensions of the contraceptive device, particularly the length I of the connection element 3 have to be selected dependent on the anatomic data, in order that a suitable closure on all parts of the contraceptive device is obtained. The closure in themouths 28 may be improved by providing the connection element with at least one circular rib as depicted in figs. 3 and 4. In fig. 3 the oblong element 9 is elliptic in longitudinal section, while in fig. 4 the oblong element 10 has three peripheral ribs 11 with rounded shapes for preventing tissue irritation. - Just like the embodiment as shown in fig. 1 that of fig. 3 is hollow, although in the latter case the
internal cavity 12 debouches at one end through anopening 13 to the atmosphere enabling measuring instruments to be accommodated in the cavity and applying tools to grip in it. - The embodiment of fig. 4 is also different from that of fig. 1 in that a layered construction is used: the
outer layer 14 may be a tissue friendly material, which property is not required for the material of theinner layer 15, which material may be chosen for its mechanical properties such as a certain elasticity. - The contraceptive device preferably is of at least an outer material which can highly increase in volume by water absorption, such as a hydrogel, offering the advantage that on dilatation of the cavity accommodating the device the diameter of the device will increase as a result of water absorption, so that the closure is safeguarded. After pressure increase the material can lose water and decrease diameter so that after a certain time the pressure exerted by the device on the surrounding tissues has an acceptable value again. Adapting the pressure is possible by a suitable selection of the materials of both layers and a selection of the wall thickness w 3 and w 4 of the
inner layer 15 of the connection element and the enlargements respectively and the wall thickness w 5 and w 6 of theouter layer 14 of these parts. - In fig. 6 an axial section through a modified embodiment is shown, comprising an
asymmetric core 20 made of copper and being rotary symmetric around its longitudinal axis. The core comprises a connection element and two enlargements at its two ends. The oneenlargement 21 is slightly pointed at its free end for easier application, theother enlargement 22 being flattened at its free end and having anaxial bore 23 for applying tools to grip in. - The core is coated all round with a layer of Polyhema (trade name) 24. Despite the asymmetric shape this embodiment satisfies the requirement that the maximum cross section areas of both enlargements in a
plane 25 transverse to the longitudinal direction have to be equal. - It is evident that the contraceptive devices shown in fig. 3 and 6 are positioned with the opening 13, 23 respectively towards the uterus cavity 6.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT79200623T ATE6462T1 (en) | 1978-10-26 | 1979-10-26 | ANTI-CONCEPTIONAL DEVICE. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL7810696 | 1978-10-26 | ||
NL7810696A NL7810696A (en) | 1978-10-26 | 1978-10-26 | ANTI-CONCEPTION DEVICE AND DEVICES FOR THEIR APPLICATION. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0010812A1 EP0010812A1 (en) | 1980-05-14 |
EP0010812B1 true EP0010812B1 (en) | 1984-03-07 |
Family
ID=19831783
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP79200623A Expired EP0010812B1 (en) | 1978-10-26 | 1979-10-26 | Contraceptive device |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0010812B1 (en) |
JP (1) | JPS5599249A (en) |
AT (1) | ATE6462T1 (en) |
DE (1) | DE2966765D1 (en) |
NL (1) | NL7810696A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6684884B2 (en) | 1995-06-07 | 2004-02-03 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and methods |
US7934504B2 (en) | 1999-08-23 | 2011-05-03 | Conceptus, Inc. | Deployment actuation system for intrafallopian contraception |
US8066007B2 (en) | 1995-06-07 | 2011-11-29 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and their delivery |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2522959A1 (en) * | 1982-03-15 | 1983-09-16 | Hamou Jacques | Tubular pessary for reversible pregnancy protection - has soft central tubular section with proximal and distal loop of fibrous material |
AU1914583A (en) * | 1982-09-30 | 1984-04-05 | Hodgson, D.E. | Expandable plug for tubular occlusion suitable for contraception |
NL9400436A (en) * | 1994-03-18 | 1995-11-01 | Benedict Marie Doorschodt | Fallopian tube blocking device and blocking assembly. |
ATE249797T1 (en) | 1995-06-07 | 2003-10-15 | Conceptus Inc | TRANSCERVICAL CONTRACEPTION DEVICE FOR CLOSURE OF THE FALLOW TUBES WITH MECHANICAL ATTACHMENT TO THE Fallopian Tube |
US5601600A (en) * | 1995-09-08 | 1997-02-11 | Conceptus, Inc. | Endoluminal coil delivery system having a mechanical release mechanism |
US5935137A (en) * | 1997-07-18 | 1999-08-10 | Gynecare, Inc. | Tubular fallopian sterilization device |
JP4683804B2 (en) | 1999-08-23 | 2011-05-18 | コンセプタス インコーポレイテッド | Insertion and deployment catheter system for intratubal contraception |
FR2962029B1 (en) | 2010-07-01 | 2013-03-01 | Vincent Lucas | POTENTIALLY REVERSIBLE FEMALE STERILIZATION DEVICE |
CN109907870A (en) * | 2019-03-22 | 2019-06-21 | 佘彩芹 | The hollow contraceptive device of Pear-Shaped |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3405711A (en) * | 1966-07-22 | 1968-10-15 | Maurice I. Bakunin | Intrauterine contraceptive device |
NL6709780A (en) * | 1967-07-14 | 1969-01-16 | ||
US3805767A (en) * | 1973-02-26 | 1974-04-23 | Erb Rene | Method and apparatus for non-surgical, reversible sterilization of females |
DE2328175C3 (en) * | 1973-06-02 | 1979-10-04 | Waldemar Dr.Med. 6630 Saarlouis Bleier | Tube occlusive pessary and device for setting the tube occlusive pessary |
FR2263738A1 (en) * | 1974-03-13 | 1975-10-10 | Benne Jacques | Contraceptive for intra-uterine insertion - is anchor shaped with horiz. ends forming hooks to prevent expulsion |
DE2537620A1 (en) * | 1975-08-23 | 1977-02-24 | Lothar Dr Med Popp | Balloon pessary for blocking fallopian tubes - is inflatable double balloon containing X:ray opaque thread in wall |
NL185264C (en) * | 1978-01-27 | 1990-03-01 | Medline Ab | Means for at least temporarily blocking channels or hollow spaces in humans or animals. |
-
1978
- 1978-10-26 NL NL7810696A patent/NL7810696A/en not_active Application Discontinuation
-
1979
- 1979-10-26 DE DE7979200623T patent/DE2966765D1/en not_active Expired
- 1979-10-26 AT AT79200623T patent/ATE6462T1/en not_active IP Right Cessation
- 1979-10-26 EP EP79200623A patent/EP0010812B1/en not_active Expired
- 1979-10-26 JP JP13859779A patent/JPS5599249A/en active Pending
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8327852B2 (en) | 1995-06-07 | 2012-12-11 | Conceptus, Inc. | Occlusion devices and methods |
US8733361B2 (en) | 1995-06-07 | 2014-05-27 | Bayer Essure Inc. | Occlusion devices and methods |
US8066007B2 (en) | 1995-06-07 | 2011-11-29 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and their delivery |
US8356599B2 (en) | 1995-06-07 | 2013-01-22 | Conceptus, Inc. | Occlusion devices and methods |
US8171936B2 (en) | 1995-06-07 | 2012-05-08 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and methods |
US7921848B2 (en) | 1995-06-07 | 2011-04-12 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and methods |
US6684884B2 (en) | 1995-06-07 | 2004-02-03 | Conceptus, Inc. | Contraceptive transcervical fallopian tube occlusion devices and methods |
US8613282B2 (en) | 1997-09-24 | 2013-12-24 | Conceptus, Inc. | Occlusion devices and methods |
US8079364B2 (en) | 1999-08-23 | 2011-12-20 | Conceptus, Inc. | Deployment actuation system for intrafallopian contraception |
US8584679B2 (en) | 1999-08-23 | 2013-11-19 | Conceptus, Inc. | Deployment actuation system |
US8381733B2 (en) | 1999-08-23 | 2013-02-26 | Conceptus, Inc. | Deployment actuation system |
US8695604B2 (en) | 1999-08-23 | 2014-04-15 | Bayer Essure Inc. | Deployment actuation system |
US7934504B2 (en) | 1999-08-23 | 2011-05-03 | Conceptus, Inc. | Deployment actuation system for intrafallopian contraception |
US9597224B2 (en) | 1999-08-23 | 2017-03-21 | Bayer Healthcare Llc | Deployment actuation system |
Also Published As
Publication number | Publication date |
---|---|
ATE6462T1 (en) | 1984-03-15 |
JPS5599249A (en) | 1980-07-29 |
EP0010812A1 (en) | 1980-05-14 |
NL7810696A (en) | 1980-04-29 |
DE2966765D1 (en) | 1984-04-12 |
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